Greetings, I have developed an application which attempts to store Arabic in Presentation Form in a data file. I realize this is not the proper way to store Arabic, however, the application which accesses the data operates on hardware with very tight memory/speed constraints and it was decided that turning standard form into presentation form at run-time would be too costly.
My conversion routine uses joining rules from FreeType 1 and uses the substitution table resulting from the following perl script: http://mail.nl.linux.org/linux-utf8/2000-10/msg00057.html Recently I've discovered that I've been missing the two element Ligatures in Arabic Presentation Forms B. Upon further research at unicode.org I also realized that I missed the three element ligatures and word ligatures in Arabic Presentation Forms A. This leads me to a few questions: The Arabic data in question is for place names in a mapping product. So far, we have only received one complaint and it was a missed two element ligature from Arabic Presentation Forms B. Does this mean that the ligatures in Arabic Presentation Forms A do not apply to place names? Or did I just luck out? If it is necessary to convert to elements in Arabic Presentation Forms A, how would I determine the substitution rules for multi element ligatures? Thanks for your time. Cheers, Ryan
